NOAA S-57 chart cell
Clarence Strait, Cholmondeley Sound, Kasaan Bay, and Skowl Arm
US4AK5HN
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 7,356
- S-57 layers
- 40
- Published
- Feb 14, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.50000° N
- South
- 55.20000° N
- West
- 132.60000° W
- East
- 132.00000° W
- Center
- 55.35000° N, 132.30000° W
- Bounds area
- 369 sq nm
- Feature density
- 19.939 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 183.9
- Smallest layer
- 1
- Largest layer
- 2,127
- Area sq km
- 1,265
- Features per sq km
- 5.81327
- DEPCNT Depth contour 2,127
- DEPARE Depth area 1,919
- SBDARE Seabed area 1,298
- UWTROC Underwater rock 666
- COALNE Coastline 438
- LNDARE Land area 430
- RIVERS River 109
- OBSTRN Obstruction 86
- LNDELV 55
- WEDKLP 49
- SEAARE Sea area 40
- M_QUAL Data quality 27
- LNDRGN Land region 21
- SOUNDG Sounding 10
- SLOGRD 9
- PILPNT 8
- SLCONS Shoreline construction 8
- FLODOC 6
- MAGVAR Magnetic variation 6
- MORFAC 6
Nearby Chart Cells
Approach usage band
Current Edition Files
The NOAA ZIP archive is the upstream source for this chart cell; the other files are Open Ships generated derivatives for web and GIS use.
- Original NOAA ZIP archive https://www.charts.noaa.gov/ENCs/US4AK5HN.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK5HN/1.1/US4AK5HN.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK5HN/1.1/US4AK5HN.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5HN/1.1/US4AK5HN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5HN/1.1/US4AK5HN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5HN/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Feb 14, 2025 | metadata.json |